本文在二维气-固流化床中,采用归原性实验的方法对流化床气体分布板的稳定性问题进行了研究。基于实验和分析,提出了归原准数R这一分布板稳定性判据。R值大于1,且其值越大,流化床由不稳定操作“归原”到稳定操作越困难,所以分布板的稳定性越差。R值越小则说明分布板的稳定性越好。本文还用有限元素法对处于不稳定操作的流化床床内死区的流体流场进行了数值求解。计算结果表明:死区内部分区域的流速已经大于临界流化速度。根据实验和计算的结果进行分析,得出 ...
王志刚
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[Analysis of potential association of alcohol exposure with femoral head osteonecrosis and construction of a diagnostic model using machine learning]. [PDF]
Tao H, Liang F, Huang W, Fan S, Zeng P.
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一种氨型反相键合固定相,其特征在于是由下述结构表示,上式中,R为C1-C20的直链烷基,R’为氢或C1-C20的直链烷基。该固定相是用一种含有β-(3,4-环氧环己基)基团的硅偶联剂与烷基胺反应后再和含羟基的微粒载体共价键合而得到的。这种键合固定相制备过程简单,原料易得,最后产物批量重复性好,稳定性能高,所得到的固定相可有效地用于有机化合物的液相色谱分离,特别是对碱性有机化合物的分离 ...
王俊德 +3 more
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[Curcumin improves osteoporosis in type 2 diabetic mice by inhibiting RANBP3L expression]. [PDF]
Zou X, Zhang X, Li P, Tian R, Lu X.
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[Clinical study of calcium phosphate cement loaded with recombinant human bone morphogenetic protein 2 combined with calcium phosphate cement loaded with antibiotic for chronic osteomyelitis with bone defect]. [PDF]
Tian Y +9 more
europepmc +1 more source
[Determination of 17 perfluorinated/polyfluoroalkyl compounds in serum by high-throughput solid-phase extraction-ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Lin Q +7 more
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[Angiotensin-converting enzyme 2 particapates in ozone-induced lung inflammation and airway remodeling in mice]. [PDF]
Wang Y +10 more
europepmc +1 more source
[In vitro and in vivo antibacterial effects of the mitochondrial antioxidant Visomitin against <i>Enterococcus</i>]. [PDF]
Yang Q, Wu Y, Wu R, She P.
europepmc +1 more source
[Isolation, identification and safety evaluation of <i>Lactobacillus gasseri</i> strain LGV03 isolated from the vagina of healthy women]. [PDF]
Su B +5 more
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胰脂肪酶是体内参与脂肪吸收的关键酶,也是治疗以肥胖为代表的代谢性疾病的靶点酶。脂肪酶抑制剂可以通过抑制脂肪酶的活性,达到减肥的目的。同时,固定化酶的制备及应用在近年来受到越来越广泛的关注。固定化酶相比自由酶在稳定性、容易分离、酶活性、生物相容性等方面有明显的优势。本论文探索,利用固定化脂肪酶对中药活性成分进行分析,以实现高效的酶抑制剂筛选、鉴定。 本学位论文由四章组成,前三章为实验部分,分别报道了固定化脂肪酶制备和表征及性质评价、利用固定化脂肪酶对中药材活性成分进行分析以及固定化脂肪酶结合荧光探针筛选 ...
祝元婷
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